Tuesday, February 02, 2010

Aardvark Publishes A Research Paper Offering Unprecedented Insights Into Social Search

Source: http://feedproxy.google.com/~r/Techcrunch/~3/IMDRrISRf-8/

In 1998, Larry Page and Sergey Brin published a paper[PDF] titled Anatomy of a Large-Scale Hypertextual Search Engine, in which they outlined the core technology behind Google and the theory behind PageRank. Now, twelve years after that paper was published, the team behind social search engine Aardvark has drafted its own research paper that looks at the social side of search. Dubbed Anatomy of a Large-Scale Social Search Engine, the paper has just been accepted to WWW2010, the same conference where the classic Google paper was published.

Aardvark will be posting the paper in its entirety on its official blog at 9 AM PST, and they gave us the chance to take a sneak peek at it. It’s an interesting read to say the least, outlining some of the fundamental principles that could turn Aardvark and other social search engines into powerful complements to Google and its ilk. The paper likens Aardvark to a ‘Village’ search model, where answers come from the people in your social network; Google is part of ‘Library’ search, where the answers lie in already-written texts. The paper is well worth reading in its entirety (and most of it is pretty accessible), but here are some key points:

  • On traditional search engines like Google, the ‘long-tail’ of information can be acquired with the use of very thorough crawlers. With Aardvark, a breadth of knowledge is totally reliant on how many knowledgeable users are on the service. This leads Aardvark to conclude that “the strategy for increasing the knowledge base of Aardvark crucially involves creating a good experience for users so that they remain active and are inclined to invite their friends”. This will likely be one of Aardvark’s greatest challenges.
  • Beyond asking you about the topics you’re most familiar with, Aardvark will actually look at your past blog posts, existing online profiles, and tweets to identify what topics you know about.
  • If you seem to know about a topic and your friends do too, the system assumes you’re more knowledgeable than if you were the only one in a group of friends to know about that topic.
  • Aardvark concludes that while the amount of trust users place in information on engines like Google is related to a source website’s authority, the amount they trust a source on Aardvark is based on intimacy, and how they’re connected to the person giving them information
  • Some parts of the search process are actually easier for Aardvark’s technology than they are for traditional search engines. On Google, when you type in a query, the engine has to pair you up with exact websites that hold the answer to your query. On Aardvark, it only has to pair you with a person who knows about the topic — it doesn’t have to worry about actually finding the answer, and can be more flexible with how the query is worded.


  • As of October 2009, Aardvark had 90,361 users, of whom 55.9% had created content (asked or answered a question). The site’s average query volume was 3,167.2 questions per day, with the median active user asking 3.1 questions per month. Interestingly, mobile users are more active than desktop users. The Aardvark team attributes this to users wanting quick, short answers on their phones without having to dig for anything. They also think people are more used to using more natural language patterns on their phones.
  • The average query length was 18.6 words (median of 13) versus 2.2-2.9 words on a standard search engine.  Some of this difference comes from the more natural language people use (with words like “a”, “the”, and “if”).  It’s also because people tend to add more context to their queries, with the knowledge that it will be read by a human and will likely lead to a better answer.
  • 98.1% of questions asked on Aardvark were unique, compared with between 57 and 63% on traditional search engines.
  • 87.7% of questions submitted were answered, and nearly 60% of them were answered within 10 minutes.  The median answering time was 6 minutes and 37 seconds, with the average question receiving two answers.  70.4% of answers were deemed to be ‘good’, with 14.1% as ‘OK’ and 15.5% were rated as bad.
  • 86.7% of Aardvark users had been asked by Aardvark to answer a question, of whom 70% actually looked at the question and 38% could answer.  50% of all members had answered a question (including 75% of all users who had ever actually interacted with the site), though 20% of users accounted for 85% of answers.
Information provided by CrunchBase


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Mobile Barcode Company Scanbuy Raises Funding From Motorola Ventures, Others

Source: http://feedproxy.google.com/~r/Techcrunch/~3/PxG9MO5xKgY/

Scanbuy, a New York-based provider of mobile barcode solutions, has received a capital injection in a round led by Motorola Ventures, Masthead Venture Partners, Hudson Ventures and private investors. Financial terms of the investment were not disclosed.

Scanbuy’s ScanLife platform provides a way for advertisers to provide digital information to consumers through the use of 2D barcodes and camera phones. That way, advertisers are able to provide consumers with access to information like product reviews, price comparisons and coupon offers simply by having them scan two-dimensional codes placed on product packaging, a magazine ad or other media. Scanlife can scan traditional UPC barcodes as well as popular 2D barcode formats like Datamatrix and QR Codes.

According to a statement released by lead investor Motorola Ventures, ‘millions’ of people have used ScanLife on a range of mobile devices running Android, BlackBerry OS, iPhone OS, Java and Symbian to date. Scanbuy also claims to have the largest and oldest patent portfolio of any company in the industry, with over 30 patents granted covering the solution.

Noteworthy: Scanbuy’s chief executive is Jonathan Bulkeley, previously CEO of barnesandnoble.com and prior Managing Director of AOL’s joint venture with Bertelsmann Online in the U.K., and AOL's Vice President of Business Development in the United States.

This investment follows Motorola Ventures’ backing of Zephyr Technology Corporation, which dates back to June 2009.


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Which Media Center Is Right for You: Boxee, XBMC, and Windows Media Center Compared [Lifehacker Showdown]

Source: http://feeds.gawker.com/~r/lifehacker/full/~3/7twO762PpRk/which-media-center-is-right-for-you-boxee-xbmc-and-windows-media-center-compared

Want all your downloads, streaming video, and other techie media stuff on your TV? Wondering which media center works best for you? Here's a look at the biggies in chart and Venn diagram form, followed by some lengthy breakdowns of each.

New to the idea of TV-connected computers? Head down below the charts for some explainers and deeper comparisons of each system. If you're already familiar with the HTPC scene, we'll give you the good stuff first.

We focused on three widely available, and generally popular, media centers for our comparison and review. We're certainly aware there are many alternatives out there, as free software or stand-alone hardware boxes, but these are the three media centers that receive ongoing development, and can be installed on the widest number of TV-connected computers.

The graphical explanations

Here's how we see the three major media centers, in chart list and Venn diagram forms:

What's a media center, exactly?

What does a media center do? It varies, but it generally takes all the stuff you'd normally enjoy on a computer or portable device—MP3s, video files, Netflix, Hulu, digital photos, and web/social apps—and plays it on a television, through your spearkers, and back onto your wireless network, if you'd like. Media centers can be run off of pretty much any capable computer, but are generally intended for small and specialized computers, called Home Theater PCs, or HTPCs. HTPCs have the video and audio ports necessary to hook up to a modern high-definition television, and generally have enough processing power and memory to handle the heavy burden of converting, playing, and sometimes recording high-resolution files. If you've got a home network set up with shared files and network-attached storage (NAS), media centers can generally pull their content off other systems and devices, as well as receive files for storage and download them directly off the net.

Put simply, a media center allows you to sit on a couch and do the most fun things you'd do on a computer with a remote. You can fire up a movie from Netflix's streaming service or from a file you've already downloaded, catch the show you missed last night on Hulu, put on background music while you're doing something else, share your Flickr or Picasa photos with visiting relatives—whatever you'd like, really.

Not every media center can do everything, however, and some are much better at certain entertainment jobs than others. The editors at Lifehacker conferred on what each box does best, tried to pin down what each system can and can't do, and put it together in ways that we hope can help you decide.

Windows Media Center, XBMC, and Boxee

Here's a more in-depth look at the media centers—installing and setting them up, and their pros and cons.

Windows Media Center is "free" with Home Premium or Ultimate copies of Windows Vista, all versions of Windows 7 except Starter or Home Basic, and available as a stand-alone, XP-based operating system dubbed "Media Center Edition." XBMC is a free and open-source media center software that was born as a game-changing XBOX modification, but now runs on Windows, Mac, Linux, and XBOX systems, as well as booting and running off a USB stick. Boxee is based on the same core internal code as XBMC, but focuses on bringing web content—video sites, blog streams, and social apps—into your living room, while XBMC remains oriented toward a download-and-play setup.

Plex, a popular and very eye-pleasing media center for Mac OS X, is certainly a contender in this category. For all intents and purposes, though, it's a variant of XBMC. Most anything we write or display in this post about XBMC applies to Plex, too, except for matters of looks and interface.

Those would be our definitions in the Lifehacker Dictionary, anyways. Let's get a bit more encyclopedic on the strengths and weaknesses of each system:

Windows Media Center

Installation and Setup: Fairly easy. It comes pre-loaded in the higher-end editions of Windows Vista and 7, and assuming your computer or HTPC has the right outputs and plugs, Windows can fairly easily adjust its display to your television. If you're running other Windows systems on your wireless network, you won't have to do much configuration to start "sharing" files back and forth from the TV-connected system to your other platforms. If you're running Mac or Linux computers, you'll have a good deal more work to do. If your media computer came with a TV tuner card already installed, Windows will recognize it and work with it to record TV shows.

Here's how Adam turned a Windows PC into a Media Center powerhouse, with a good detail on the installation and setup process.

Strengths

  • Nice and easy DVR: And you don't have to pay a monthly fee.
  • Calm, easy interface:Divided into obvious sections and fairly intuitive directional layouts.
  • Large range of compatible remotes: Look online or in an electronics store for a "Windows Media Center remote," and you'll find something with lots of buttons that instantly hooks up to your Media Center, usually through a USB-connected receiver.
  • Generally easy networking: Across Windows systems, that is, and if you're down with the shared folders setup.

Weaknesses

  • File handling: Generally, Media Center can handle the same files that Windows Media Player can handle, and, with the right codec installations, that can be quite extensive. But out of the box, don't expect support for the diverse range of video and audio you'll find around the web.
  • Windows-only: But you knew that.
  • Complex remotes: Media Center works with a lot of remotes, but they often look like parodies of button-stuffed clickers. If a simple, Apple-like navigator exists for Media Center, do tell us in the comments.
  • Locked-down DVR files: Work-arounds and decoders exist, of course, but if you want to play your recorded TV shows on anything other than your personal set of authorized Windows machines, Zunes, and XBOX devices, good luck.

XBMC

Installation and Setup: It depends, of course, on the platform and hardware you're installing on. Getting it running and connected on a modern Windows or Mac system is fairly painless, at least from a software standpoint. Running it as a "live" system from a USB stick isn't too hard, either, and you can install it from there onto an HTPC hard drive. Plugging it into a Madriva Linux box and hooking it up to your very specialized 1080p plasma setup with optical audio out will likely require hair plugs and years of therapy.

Read up on Adam's guide to building a silent, standalone XBMC media center on the cheap for a look at the live-USB-to-installation path on a $200 HTPC system.

Strengths

  • Open source, open nature: Need XBMC to do something it doesn't do already? Chances are, there's a clever hacker working on it. XBMC doesn't have the same kind of "platform" that its offspring Boxee does, but coders can get into it and make it better, and make it do more.
  • Meta-data and file recognition: From personal trials and commenter anecdotes, XBMC is really good at knowing when you've put new files somewhere in your system, figuring out what types of files they are (movie, TV, music, or picture), and reaching out to the internet to pull down relevant pictures, data, reviews, and even trailer links for the videos and music you plug into it.
  • Light and agile: Relatively speaking, XBMC may have some really nice graphics and menus, but because it comes from a project to put a full media center on a game system, XBMC is focused on playing back media files as smoothly as possible.
  • Slick, customizable looks: Even putting Plex aside, XBMC wins, hands-down, for looking like you're living in the future when displayed on a really big, nice TV. Don't like the way it looks by default? Put a new skin on it, and it's a whole different beast.
  • Format support: Personally, I've never found a file on the web, or converted from a friend's computer, that XBMC couldn't play, unless something was wrong with it.

Weaknesses:

  • Lack of Netflix, Hulu: There have been work-arounds, hacks, and other tweaks to make XBMC work with the two big names in streaming video. If you were depending on either one, though, XBMC would not be a safe bet.
  • Over-stuffed, sometimes complicated menus: XBMC's menus and layout are the geekiest around—how you react to that depends on your temperament. You can do all kinds of things from any screen in XBMC, and its interface often has a smile-inducing futuristic feel to it. But for someone new to media centers and looking to just sit down and play something, it can be quite imposing.

Boxee

Installation and Setup: On Windows and Mac systems, the latest Boxee beta is relatively simple to install, as it uses the built-in video and audio systems to push out content. On Linux, it's a good deal more complex, but, then again, what on Linux isn't? Apple TVs require a bit of hacking. In general, Boxee is compatible with the same kind of hardware as XBMC—OpenGL or DirectX-compatible video cards are highly recommended.

Here's how Kevin set up a cheap but powerful Boxee media center using a brawny $350 HTPC and free copies of Linux and Boxee.

Strengths

  • Built-in Hulu and Netflix: Boxee and Hulu have had their differences, but they seem to have reached a draw in the stand-off—most Hulu shows and movies work, most of the time. Netflix works fine on Windows and Mac, assuming you don't mind installing Microsoft's Silverlight system.
  • Growing directory of web content apps: Love FailBlog? Dig Vimeo's really hi-res stuff? Fan of TwiT's videocasts? Watch them all from Boxee's app, and grab more in the app "store," which has a very healthy selection of customized streaming content.
  • Play anything (technically): Boxee uses a reworked Firefox browser to view Hulu, but it's available for nearly any kind of web video page you find on the web. The Boxee Browser is a kind of last resort for any web content that doesn't have its own app.

Weaknesses

  • Love-it-or-leave-it interface: Even with its content-forward redesign, many media center aficianados have said they can't get used to Boxee's hidden left-hand sidebars and forward/back functionality. Some just don't like the default looks. It's not a make-or-break issue, considering it's basically the same core tools as XBMC, but if you're going to spend serious time with a media center, you want to like how it looks.
  • Local file handling: Boxee doesn't seem as smart about recognizing and updating local file stores. In the words of one Lifehacker editor, "Local files are almost an afterthought." That's to be expected, somewhat, on a system that's so web-facing and stream-savvy, but Boxee could do a lot more to make download music, movies, and pictures easier to gather, organize, and access.

We know—we absolutely know—that we may have missed a feature, put in "No" where "Yes" should have been, or otherwise missed a detail or two in our breakdown of these media centers. We tried our best to research and check them, but if you see something wrong, or missing, in our explanations or charts, by all means: tell us, politely, in the comments, and we'll update this post, and the charts to match the reality.

Feel free to also tell us which system has worked best for you, and why, in the comments.



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Intel Looking to Stuff DDR3 Support Into Two New Atom Processors [Guts]

Source: http://feeds.gawker.com/~r/gizmodo/full/~3/1vUOaRNXo9c/intel-looking-to-stuff-ddr3-support-into-two-new-atom-processors

Intel's Atom line of processors, used extensively in netbooks, have never been particularly powerful. They're like the adorable kid sister of the Intel family. Today, though, reports indicate that they may be getting some grown-up DDR3 support this fall.

Fudzilla is reporting that the Atom N475 will clock in at 1.83GHz with DDR3 support, while the only difference between the current 1.6GHz N450 and its N455 successor is that the latter will be DDR3 capable.

What does this mean for netbooks? Well, think of it as more evolutionary than revolutionary. DDR3 is faster and uses less power than DDR2, but also more expensive. Ideally, by the time and N475 or N455-powered netbooks hit the market, though, DDR3 prices will have come down enough that you'll get better netbook performance for what you're paying now. [Fudzilla via Engadget]



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Compare Google Suggest Results Visually

Source: http://www.labnol.org/internet/compare-google-suggest-results/12544/

Google Suggest is one of the most interesting and useful features of Google. As you type words in the Google search box, it will try to guess what you are looking for and offer suggestions in real-time.

While we don’t know how exactly Google Suggest works, it does offer a peek into what others are asking or looking for on the web.

Google Suggest

For instance, type “how to” in the Google search box and you’ll instantly know that loads of people are looking for information to “how to tie a tie” and “how to lose weight fast”. Google Suggest can also help you understand what others think of a particular product or service. Try the phrase “facebook is” in the search box and you’ll know what people generally think of Facebook.

Google offers search suggestions in a plain drop-down but if you are looking to compare Google Suggest results in a more visual manner, check out Web Seer – this again works as-you-type but the interesting part is that with Web Seer, you can also compare query suggestions for two different phrases.

Here’s an example comparing Facebook and Twitter. Lot of people seem to agree on one these – these networks are a “waste of time.”

Opinion of Twitter and Facebook

The arrow thicknesses in the visualization is an indicator of the number of web pages that are in Google’s index for that query.

The next visualization compares public opinion about Chrome and Firefox according to Google Suggest. The common problem is “speed.”

Firefox and Google Chrome

Compare Google Suggest Results Visually

Originally published at Digital Inspiration by Amit Agarwal.

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